Finding the Third Proportional to 89,613,066 and 138,399,804

Step by Step Solution

1. Step 1: Write the proportion equation
   89,613,066 : 138,399,804 = 138,399,804 : x
2. Step 2: Convert to fraction form
   89,613,066/138,399,804 = 138,399,804/x
3. Step 3: Cross multiply
   89,613,066x = 138,399,804 × 138,399,804
4. Step 4: Simplify right side
   89,613,066x = 19,154,505,747,238,416
5. Step 5: Solve for x
   x = 19,154,505,747,238,416/89,613,066
6. Step 6: Final answer
   x = 213,746,796.11